Water in the seal oil tank of the delayed coking unit
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Why does the oil-sealing tank in a delayed coking unit need to have water removed from it frequently? The possibility of a leak in the water cooler and internal leakage of the cleaning steam has been ruled out
What kind of oil do you use as the sealing oil? The oil temperature is high when it arrives, but it drops after entering the tank, which results in the formation of a small amount of water
Is the oil itself already contaminated with water?
Water carried by the stripping steam can also cause water entrainment!
There is a heating coil inside; it’s likely that there’s a leak in the coil. Most probably, the water came from the oil-sealing material used. A analysis and testing will reveal the answer.
Do you produce diesel fuel by yourselves for use as sealing oil? I think you can use diesel from the tank area once as sealing oil, which should be sufficient for two shifts; this way it will be possible to determine whether the high water content is due to internal production or leaks in the heat exchange system.
If there is a stripping tower, steam may contain water; steam generated in the drum is fed into the furnace, and after the tower is removed, temperature control in the furnace might be poor, resulting in superheated steam with insufficient temperature.